CN101568439B - Pneumatic tire - Google Patents
Pneumatic tire Download PDFInfo
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- CN101568439B CN101568439B CN2007800480806A CN200780048080A CN101568439B CN 101568439 B CN101568439 B CN 101568439B CN 2007800480806 A CN2007800480806 A CN 2007800480806A CN 200780048080 A CN200780048080 A CN 200780048080A CN 101568439 B CN101568439 B CN 101568439B
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- end reinforcement
- cord
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- 239000000835 fiber Substances 0.000 claims abstract description 68
- 230000002787 reinforcement Effects 0.000 claims abstract description 67
- 239000002131 composite material Substances 0.000 claims abstract description 25
- 210000003754 fetus Anatomy 0.000 claims description 5
- 238000004804 winding Methods 0.000 abstract description 6
- 239000010410 layer Substances 0.000 description 24
- 238000012360 testing method Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 10
- 239000011324 bead Substances 0.000 description 7
- 238000000926 separation method Methods 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 5
- 229920002302 Nylon 6,6 Polymers 0.000 description 4
- 239000004677 Nylon Substances 0.000 description 3
- 239000004760 aramid Substances 0.000 description 3
- 229920003235 aromatic polyamide Polymers 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 229920001778 nylon Polymers 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005987 sulfurization reaction Methods 0.000 description 2
- 238000004073 vulcanization Methods 0.000 description 2
- BCMCBBGGLRIHSE-UHFFFAOYSA-N 1,3-benzoxazole Chemical compound C1=CC=C2OC=NC2=C1 BCMCBBGGLRIHSE-UHFFFAOYSA-N 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
- B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
- B60C9/22—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel the plies being arranged with all cords disposed along the circumference of the tyre
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/0042—Reinforcements made of synthetic materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
- B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
- B60C9/22—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel the plies being arranged with all cords disposed along the circumference of the tyre
- B60C9/2204—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel the plies being arranged with all cords disposed along the circumference of the tyre obtained by circumferentially narrow strip winding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
- B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
- B60C2009/2012—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel with particular configuration of the belt cords in the respective belt layers
- B60C2009/2029—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel with particular configuration of the belt cords in the respective belt layers with different cords in the same layer, i.e. cords with different materials or dimensions
Abstract
A pneumatic tire in which high speed durability and noise performance can be improved. The pneumatic tire has a belt reinforcement structure (10) constituted by winding an organic fiber cord (n) spirally in the circumferential direction (T) of tire on the outer circumferential side of belt layers (8, 9). The belt reinforcement structure (10) has an end reinforcement layer (10B) arranged on the outer circumferential sides of respective end regions (BE) of belt layers (8, 9). The end reinforcement layer (10B) has a two layer structure where an organic fiber cord (nb) consisting of a composite cord is wound spirally from the axial inside toward the axial outside of the tire, turned down at the end (10e) of the belt reinforcement structure, and wound spirally from the axial outside toward the axial inside of the tire, and then the opposite ends of the organic fiber cord (nb) are separated axially inward of the tire from the end (10e) of the belt reinforcement structure.
Description
Technical field
The present invention relates to air-inflation tyre, in more detail, relate to the air-inflation tyre that can improve high speed durability and noise performance.
Background technology
Effect has larger centnifugal force on tire when running at high speed, so diameter of tyres becomes large and causes the external diameter growth.Easily produce separation at the edge of the concentrated bracing ply of stress thus.Therefore, arranged at the outer circumferential side of bracing ply in the past and organic fiber cord was wound into band Shu Jiaqiang structure that spiral fashion forms as covering member on tire Zhou Fangxiang, the high speed durability is guaranteed in the external diameter growth of the tire when suppressing thus to run at high speed and suppress the generation of the edge separation of bracing ply.
in the past, known (for example have following technology, with reference to patent documentation 1): as above-mentioned band Shu Jiaqiang structure, for example consist of the band Shu Jiaqiang structure that the end reinforcement by the central enhancement Layer of the outer circumferential side of the middle section that is configured in bracing ply and the outer circumferential side in the zone, both ends that is configured in bracing ply consists of, consisted of the organic fiber cord of central enhancement Layer by the organic fiber cords such as nylon of percentage elongation large (modulus of elasticity is less), on the other hand in the organic fiber cord of end reinforcement, the composite cord that the ultimate fibre twisted that the ultimate fibre that the organic fibers such as nylon that use is larger with percentage elongation consist of and the organic fibers such as aramid fibre of percentage elongation less (modulus of elasticity is larger) consist of forms.
By such formation band Shu Jiaqiang structure, have advantages of following: the lifting in the time of can following tyre vulcanization with the organic fiber cord of Shu Jiaqiang structure, and can effectively suppress to produce the external diameter growth of end of the bracing ply of edge separation, bring into play higher high speed durability.In addition, also can suppress the vibration of the sidewall section of tire, so also help the improvement of tire noise.
But, in recent years, be accompanied by the high performance of vehicle, the further improvement of strong request tyre performance, for above-mentioned high speed durability, noise performance, also strong request further improves.
Patent documentation 1: Japanese kokai publication hei 5-338409 communique
Summary of the invention
The object of the present invention is to provide a kind of air-inflation tyre that can improve high speed durability and noise performance.
reach the air-inflation tyre of the present invention of above-mentioned purpose, body piles outer circumferential side configuration bracing ply at fetus face, outer circumferential side at this bracing ply arranges the band Shu Jiaqiang structure that organic fiber cord is reeled in the shape of a spiral along tire Zhou Fangxiang, this is with the central enhancement Layer of Shu Jiaqiang structure by the outer circumferential side of the middle section that is configured in described bracing ply, consist of with the end reinforcement of the outer circumferential side of each end regions of the described bracing ply that is configured in the tire direction of principal axis both sides that are positioned at this middle section, the organic fiber cord of described central enhancement Layer is that organic fiber below 10000MPa consists of by modulus of elasticity, the organic fiber cord of described end reinforcement is made of composite cord, this composite cord is to be that the ultimate fibre that consists of of the organic fiber below 10000MPa and the ultimate fibre twisted that is made of the high organic fiber of this organic fiber of modular ratio form by modulus of elasticity, wherein:
Described end reinforcement, the side direction tire direction of principal axis outside that is described composite cord in the tire direction of principal axis reels in the shape of a spiral, turn back in band Shu Jiaqiang structure end, and reel in the shape of a spiral from tire direction of principal axis inboard, tire direction of principal axis lateral, the double-layer structure with Shu Jiaqiang structure end is left at the two ends of described composite cord towards tire direction of principal axis inboard.
According to above-mentioned the present invention, due to end reinforcement is made as double-layer structure, so can be than the more effectively external diameter growth of the end of the bracing ply of inhibition generation edge separation in the past, so can improve the high speed durability, and, can be than more effectively suppress the vibration of sidewall section in the past, so can improve tire noise.
The two ends of organic fiber cord that make end reinforcement stand away from the band Shu Jiaqiang structure end that easily causes stress and concentrate to tire direction of principal axis inboard, so can suppress the generation of the edge separation of end reinforcement, further improve the high speed durability.
Description of drawings
Fig. 1 means the part sectional view of an airtyred embodiment of the present invention.
Fig. 2 is with body piles, bracing ply and the instruction diagram that represents with Shu Jiaqiang structure local expansion.
Fig. 3 means the amplification view with an example of the band that uses in the Shu Jiaqiang structure (web).
Fig. 4 means the band spirally winding is spreaded all over the instruction diagram of the state that launches in tire one week with the Shu Jiaqiang structure.
Fig. 5 A means the instruction diagram of analysing and observe with other examples of Shu Jiaqiang structure.
Fig. 5 B means the instruction diagram of analysing and observe with another other examples of Shu Jiaqiang structure.
Fig. 5 C means the instruction diagram of analysing and observe with another other examples of Shu Jiaqiang structure.
Fig. 5 D means the instruction diagram of analysing and observe with another other examples of Shu Jiaqiang structure.
Fig. 6 A means the instruction diagram of analysing and observe with another other examples of Shu Jiaqiang structure.
Fig. 6 B means the instruction diagram of analysing and observe with another other examples of Shu Jiaqiang structure.
Fig. 6 C means the instruction diagram of analysing and observe with another other examples of Shu Jiaqiang structure.
Fig. 6 D means the instruction diagram of analysing and observe with another other examples of Shu Jiaqiang structure.
Nomenclature
1: fetus face
2: sidewall section
3: bead part
4,5: body piles
8,9: bracing ply
10: band Shu Jiaqiang structure
10A: central enhancement Layer
10B: end reinforcement
10B1: the 1st end reinforcement
10B2: the 2nd end reinforcement
10e: band Shu Jiaqiang structure end
11: band
BC: middle section
BE: end regions
T: tire Zhou Fangxiang
F: strengthen cord
N, na, nb: organic fiber cord
R: rubber layer
The specific embodiment
Below, with reference to accompanying drawing, embodiments of the present invention are elaborated.
Fig. 1 represents an airtyred embodiment of the present invention, and symbol 1 is fetus face, and symbol 2 is sidewall section, and symbol 3 is bead part.
Between the bead part 3 of the left and right in tire, extension is provided with 2 layers of body piles 4,5.As shown in Figure 2, in this body piles 4,5, in tire footpath side upwardly extending consisted of by organic fiber cords such as polyester, rayons strengthen cord f on tire Zhou Fangxiang T with predetermined being spaced in being embedded in rubber layer r.2 layers of body piles 4,5 is made of the body piles 4 of inboard and the body piles 5 in the outside.The bead core 6 of both ends 4a in being embedded in bead part 3 of inboard body piles 4 turns back with mode that bead filler 7 the is sandwiched side direction tire direction of principal axis outside in the tire direction of principal axis.The both ends 5a of the body piles 5 in the outside is wound up into the tire direction of principal axis from the tire direction of principal axis outside around bead core 6 inboard.
The dynamic modulus of elasticity of the rubber of body piles 4,5 rubber layer r is low, below 5MPa, has improved thus ride quality.In addition, the said dynamic modulus of elasticity, be to use visoelasticity spectrometer (Japan's essence mechanism is done made), the dynamic modulus of elasticity when measuring under the condition of temperature 60 C, initial strain 10%, amplitude ± 2%, oscillation frequency 20Hz here.
At the body piles 4 of fetus face 1,5 outer circumferential side, be provided with 2 layers of bracing ply 8,9, in this bracing ply 8,9, to be embedded in rubber layer u more than 25 ° and less than the angular range of the 35 ° reinforcement cord m such as steel cord with respect to tire Zhou Fangxiang T tilted configuration.The reinforcement cord m of bracing ply 8 tilts to a direction with respect to tire Zhou Fangxiang T, the reinforcement cord m of bracing ply 9 tilts to another direction with respect to tire Zhou Fangxiang T, make bracing ply 8,9 reinforcement cord m opposite with respect to the direction of tilt of tire Zhou Fangxiang T, intersect.
At bracing ply 8,9 outer circumferential side, be provided with organic fiber cord n and be wound into screw-shaped band Shu Jiaqiang structure 10 as covering member on tire Zhou Fangxiang T.With the central enhancement Layer 10A of Shu Jiaqiang structure 10 by the outer circumferential side that is configured in the middle section BC on bracing ply 8,9 tire direction of principal axis, and the end reinforcement 10B of outer circumferential side that is configured in bracing ply 8, each end regions BE of 9 of the tire direction of principal axis both sides that are positioned at middle section BC consists of.The organic fiber cord na of the enhancement Layer 10A of central authorities is that organic fiber below 10000MPa consists of by modulus of elasticity.Be organic fiber below 10000MPa as modulus of elasticity, preferably use such as nylon (nylon 66) fiber, polyethylene terephthalate (PET) fiber etc.The lower limit of the modulus of elasticity of organic fiber cord na is considered from the aspect of the processing that adds man-hour, more than preferably being made as 1000MPa.
The organic fiber cord nb of end reinforcement 10B is made of composite cord, and this composite cord is to be that the ultimate fibre that consists of of the organic fiber below 10000MPa and the ultimate fibre twisted that is made of the high organic fiber of the organic fiber below modular ratio 10000MPa form by modulus of elasticity.Be organic fiber below 10000MPa as modulus of elasticity, preferably use fiber same as described above.Preferably use modulus of elasticity to be the organic fiber more than 30000MPa as the high organic fiber of modulus of elasticity.Be organic fiber more than 30000MPa as modulus of elasticity, can enumerate aramid fibre, polyketenes fiber, Ju Dui penylene benzoxazole (PBO) fiber, PEN (PEN) fiber etc.From considering with the aspect of the gleyness of rubber, preferably use the polyketenes fiber.
Composite cord for example can obtain like this: will be to a direction first twist be 1 of consisting of of organic fiber below 10000MPa or many ultimate fibres and to 1 or the many ultimate fibre boundlings that consisted of by the high organic fiber of modulus of elasticity of a direction first twist, (another direction) twisted round about by modulus of elasticity.
In central enhancement Layer 10A and end reinforcement 10B, as shown in Figure 3, use the band 11 that covers rubber on 1 or many organic fiber cord n.As shown in Figure 4, central enhancement Layer 10A forms the monolayer constructions will of band 11 from the axial side direction opposite side of tire spirally winding on tire Zhou Fangxiang T.
About end reinforcement 10B, will at least 1 band 11 side direction tire direction of principal axis outside in the tire direction of principal axis be wound into spiral fashion and turn back at band Shu Jiaqiang structure end 10e, and from tire direction of principal axis lateral tire direction of principal axis inside winding curl, form thus the 1st end reinforcement 10B1 adjacent with bracing ply 9 and be layered in the double-layer structure of the 2nd end reinforcement 10B2 of its outer circumferential side, two ends 11e, the 11f of band 11 is from being with Shu Jiaqiang structure end 10e to stand away to tire direction of principal axis inboard.In other words, the organic fiber cord nb that is consisted of by the composite cord that is coated with rubber side direction tire direction of principal axis outside spirally winding and turning back at band Shu Jiaqiang structure end 10e in the tire direction of principal axis, and then from the inboard spirally winding of tire direction of principal axis lateral tire direction of principal axis, the two ends of organic fiber cord nb stand away to tire direction of principal axis inboard from band Shu Jiaqiang structure end 10e.
So in the present invention, by end reinforcement 10B is made as double-layer structure, can be than the more effectively external diameter growth of the end of the bracing ply of inhibition generation edge separation in the past, so can improve the high speed durability, on the other hand, can be than more effectively suppress the vibration of sidewall section 2 in the past, so can improve tire noise.
And, the two ends of the organic fiber cord nb of end reinforcement 10B are stood away to tire direction of principal axis inboard from the band Shu Jiaqiang structure end 10e that easily causes stress and concentrate, so can suppress the generation of the edge separation of end reinforcement 10B, further improve the high speed durability.
In the present invention, the composite cord that uses in organic fiber cord nb as end reinforcement 10B, preferred stretching-the tension curve that uses (is stretched び-powerful bent Line, the S-S curve) flex point is the composite cord below 2%, can suppress thus because the thermal contraction in the PCI that carries out after vulcanization process and sulfuration (post-cure expands (post-cure inflation)) operation makes composite cord lax, so can more effectively suppress the vibration of sidewall section 2 and the external diameter growth of belt ends.As the lower limit of flex point, be applied to the viewpoint of the lifting (リ Off ト) on green tire during from sulfuration, preferably be made as more than 1%.Such flex point is that the composite cord below 2% can obtain by for example suitably adjusting the tension force of giving add twisting count (twisting with the fingers the り number), dip treating the time.
In the above-described embodiment, end reinforcement 10B constitutes the 1st end reinforcement 10B1 and has same widths with the 2nd end reinforcement 10B2 essence and roughly overlap up and down ground fully stacked, but also can be with 1 band continuous reeling curl, thus as shown in Fig. 5 A～5D, at the end reinforcement 10B of the outer circumferential side of the end regions BE that is configured in bracing ply 8,9 at least one party, to divide stacked the 1st end reinforcement 10B1 of the mode that staggers and the 2nd end reinforcement 10B2 on tire direction of principal axis top.The 1st end reinforcement 10B1 and the 2nd end reinforcement 10B2 essence of the end reinforcement 10B of the central enhancement Layer 10A both sides shown in Fig. 5 A～5D have same widths.
The 1st end reinforcement 10B1 and the 2nd end reinforcement 10B2 also can as shown in Fig. 6 A～6D, be made as the different structure of width.This moment also can be with 1 band continuous reeling curl, thus at the end reinforcement 10B of the outer circumferential side of the end regions BE that is configured in bracing ply 8,9 at least one party, to divide stacked the 1st end reinforcement 10B1 of the mode that staggers and the 2nd end reinforcement 10B2 on tire direction of principal axis top.
The present invention especially can be applied to the air-inflation tyre that manned vehicle is used, but is not limited thereto.
Embodiment
tire size all is made as 205/65R15, make respectively the tire of the present invention 1～3 of structure shown in Figure 1, comparative tire and in the past tire as the test tire, wherein: in tire 1～3 of the present invention, the end reinforcement with the Shu Jiaqiang structure of outer circumferential side that is configured in each end regions of bracing ply constitutes 1 strip coil coiled is become 2 layers of structure, and two ends that make band stand away from band Shu Jiaqiang structure end to tire direction of principal axis inboard, in this band, 8 composite cords are embedded in width 10mm, in the half finished rubber layer of thickness 1.4mm, in comparative tire, be that two ends with band are configured in the structure with Shu Jiaqiang structure end with the end reinforcement of Shu Jiaqiang structure, in addition have the structure identical with tire 1 of the present invention, in the past in tire, with the end reinforcement of Shu Jiaqiang structure, 1 strip coil coiled same as described above is made as monolayer constructions will, in addition has the structure identical with tire 1 of the present invention.
In each test tire, be 120mm with the width of Shu Jiaqiang structure, use nylon 66 in the organic fiber cord with the central enhancement Layer of Shu Jiaqiang structure.At tire 1 of the present invention, 2, comparative tire with in the past in tire, use the composite cord [(1670dtex, 1400dtex)/2] of aramid fibre (1670dtex) and nylon 66 (1400dtex) in the composite cord of end reinforcement.In tire 3 of the present invention, use the composite cord [(1670dtex, 1400dtex)/2] of polyketenes fiber (1670dtex) and nylon 66 (1400dtex) in the composite cord of end reinforcement.Each flex point of composite cord of testing tire is as shown in table 1.
In tire 1～3 of the present invention and comparative tire, the width of the 1st end reinforcement is 30mm, and the width of the 2nd end reinforcement is 20mm.The width of the end reinforcement of tire was 30mm in the past.In addition, in each test tire, use polyester cord (1670dtex/2) in the reinforcement cord of body piles, the dynamic modulus of elasticity that covers the rubber of strengthening cord is 4.5MPa.
Each test tire is arranged on JATMA governing criterion wheel rim, air pressure is made as 240kPa, by the test method shown in following, carry out the ranking test of high speed durability and noise performance, obtain the result shown in table 1.
The high speed durability
Each test tire is arranged on has on the experimental engine of steel rotary drum that surface smoothing and diameter are 1707mm, ambient temperature is controlled to be 38 ± 3 ℃, make and respectively test tire and travelled on rotary drum 2 hours with the speed of 81km/h, next to 120km/h, it was travelled 20 minutes speed rising, then the determination test tire produced the speed of fault with speed rising 10km/h in every 20 minutes.By will be in the past tire be made as 100 exponential quantity and represent this evaluation result.This value is larger, and the high speed durability is more excellent.
Noise performance
Each test tire is arranged on the manned vehicle of free air capacity 2500cc, and in the car by test ride person when carrying out actual travel on test roads, noise carries out sensory evaluation.By will be in the past tire be made as 5 point-scores of 3 minutes and represent this evaluation result.This value is larger, and noise is lower, and noise performance is more excellent.
Table 1
| Tire in the past | Comparative tire | Tire 1 of the present invention | Tire 2 of the present invention | Tire 3 of the present invention | |
| Flex point (%) | 3 | 3 | 3 | 1.8 | 3 |
| The high speed durability | 100 | 100 | 120 | 125 | 125 |
| Noise performance | 3 | 3.2 | 3.2 | 3.5 | 3.2 |
As known from Table 1, tire of the present invention can improve high speed durability and noise performance than tire in the past.
The present invention with effect of above-mentioned excellence especially can be applied in the air-inflation tyre that is used in manned vehicle.
Claims (4)
1. air-inflation tyre, body piles outer circumferential side configuration bracing ply at fetus face, outer circumferential side at this bracing ply arranges the band Shu Jiaqiang structure that organic fiber cord is reeled in the shape of a spiral along tire Zhou Fangxiang, this is with the central enhancement Layer of Shu Jiaqiang structure by the outer circumferential side of the middle section that is configured in described bracing ply, consist of with the end reinforcement of the outer circumferential side of each end regions of the described bracing ply that is configured in the tire direction of principal axis both sides that are positioned at this middle section, the organic fiber cord of described central enhancement Layer is that organic fiber below 10000MPa consists of by modulus of elasticity, the organic fiber cord of described end reinforcement is made of composite cord, this composite cord is to be that the ultimate fibre that consists of of the organic fiber below 10000MPa and the ultimate fibre twisted that is made of the high organic fiber of this organic fiber of modular ratio form by modulus of elasticity, wherein:
Described end reinforcement, the side direction tire direction of principal axis outside that is described composite cord in the tire direction of principal axis reels in the shape of a spiral, turn back in band Shu Jiaqiang structure end, and reel in the shape of a spiral from tire direction of principal axis inboard, tire direction of principal axis lateral, the double-layer structure with Shu Jiaqiang structure end is left at the two ends of described composite cord towards tire direction of principal axis inboard;
Described end reinforcement is made of the 1st end reinforcement adjacent with described bracing ply and the 2nd end reinforcement that is layered in the outer circumferential side of the 1st end reinforcement, described the 1st end reinforcement is different from the width of the 2nd end reinforcement, is configured in the 1st end reinforcement of end reinforcement of outer circumferential side of at least one end regions of described bracing ply and the 2nd end reinforcement part on the tire direction of principal axis ground that staggers stacked;
In described composite cord, the flex point of stretching-tension curve is below 2%;
The lower limit of described flex point is 1%.
2. air-inflation tyre as claimed in claim 1, wherein: the modulus of elasticity of the described organic fiber that modulus of elasticity is high is more than 30000MPa.
3. air-inflation tyre as claimed in claim 2, wherein: the described organic fiber that modulus of elasticity is high is the polyketenes fiber.
4. air-inflation tyre as described in any one in claims 1 to 3, wherein: described body piles constitutes in rubber layer to be embedded in the upwardly extending reinforcement cord in tire footpath side by predetermined spaced mode on tire Zhou Fangxiang, and the dynamic modulus of elasticity of the rubber of this rubber layer is below 5MPa.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP351115/2006 | 2006-12-27 | ||
| JP2006351115 | 2006-12-27 | ||
| PCT/JP2007/072381 WO2008078476A1 (en) | 2006-12-27 | 2007-11-19 | Pneumatic tire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101568439A CN101568439A (en) | 2009-10-28 |
| CN101568439B true CN101568439B (en) | 2013-05-22 |
Family
ID=39562269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007800480806A Active CN101568439B (en) | 2006-12-27 | 2007-11-19 | Pneumatic tire |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US8336593B2 (en) |
| EP (1) | EP2098385B1 (en) |
| JP (1) | JP5487618B2 (en) |
| CN (1) | CN101568439B (en) |
| WO (1) | WO2008078476A1 (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6133066B2 (en) * | 2013-01-25 | 2017-05-24 | 株式会社ブリヂストン | Pneumatic tire |
| CN106573499B (en) * | 2014-05-06 | 2018-09-18 | 科德沙环球纱线工业和贸易股份公司 | Band for pneumatic tire enhances band |
| JP6442228B2 (en) * | 2014-10-29 | 2018-12-19 | 株式会社ブリヂストン | Pneumatic tires for passenger cars |
| JP6030623B2 (en) * | 2014-11-26 | 2016-11-24 | 住友ゴム工業株式会社 | Pneumatic tire |
| JP6491564B2 (en) * | 2015-07-29 | 2019-03-27 | Ｔｏｙｏ Ｔｉｒｅ株式会社 | Pneumatic tire |
| JP6612549B2 (en) * | 2015-07-29 | 2019-11-27 | Ｔｏｙｏ Ｔｉｒｅ株式会社 | Pneumatic tire |
| CN109715411B (en) * | 2016-10-06 | 2021-02-09 | 横滨橡胶株式会社 | Bias tyre |
| JP6928494B2 (en) * | 2017-06-19 | 2021-09-01 | 株式会社ブリヂストン | Pneumatic tires |
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| JP6861144B2 (en) * | 2017-12-13 | 2021-04-21 | 株式会社ブリヂストン | tire |
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| JP6934452B2 (en) * | 2018-06-19 | 2021-09-15 | 株式会社ブリヂストン | tire |
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| EP2098385A4 (en) | 2010-09-22 |
| EP2098385B1 (en) | 2014-01-08 |
| JPWO2008078476A1 (en) | 2010-04-15 |
| US8336593B2 (en) | 2012-12-25 |
| CN101568439A (en) | 2009-10-28 |
| EP2098385A1 (en) | 2009-09-09 |
| JP5487618B2 (en) | 2014-05-07 |
| WO2008078476A1 (en) | 2008-07-03 |
| US20100200140A1 (en) | 2010-08-12 |
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